I'm relatively new to sewing so bare with me. I have a Juki DU-141NH industrial machine that I have been learning with. I purchased the machine used and have spent quite some time getting it in working condition. I have now ran into a thread tension issue that when I raise the foot and the thread tension disengages (like it is supposed to I think...)but if I put a thick piece of fabric under the foot, the tension does not engage. At this point there is no upper thread tension and thus does not stitch.
Does this sound like this could be a problem with the thread tension or the knee lift assembly? Has anyone else had a problem like this before?
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